WO2017163837A1 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
WO2017163837A1
WO2017163837A1 PCT/JP2017/008765 JP2017008765W WO2017163837A1 WO 2017163837 A1 WO2017163837 A1 WO 2017163837A1 JP 2017008765 W JP2017008765 W JP 2017008765W WO 2017163837 A1 WO2017163837 A1 WO 2017163837A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
cooling
cooling device
suture needle
patient
Prior art date
Application number
PCT/JP2017/008765
Other languages
English (en)
Japanese (ja)
Inventor
幸春 吉見
弘久 川井
池田　哲夫
Original Assignee
株式会社吉見製作所
株式会社秋山製作所
国立大学法人九州大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社吉見製作所, 株式会社秋山製作所, 国立大学法人九州大学 filed Critical 株式会社吉見製作所
Priority to US16/087,143 priority Critical patent/US20190099169A1/en
Priority to EP17769882.6A priority patent/EP3434198A4/fr
Publication of WO2017163837A1 publication Critical patent/WO2017163837A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/062—Needle manipulators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/0614—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using shape memory elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0058—Flexible endoscopes using shape-memory elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect

Definitions

  • the technology disclosed in this specification relates to a cooling device.
  • it is related with the cooling device which cools the member made from a shape memory alloy.
  • the temperature of the shape memory alloy In order to utilize the characteristics of the shape memory alloy, the temperature of the shape memory alloy must be controlled. That is, the material characteristics must be changed by heating the shape memory alloy, or the material characteristics must be changed by cooling the shape memory alloy.
  • heating the shape memory alloy it can be heated by a simple method such as energization heating.
  • energization heating a simple method
  • there are various problems regarding the method of cooling the shape memory alloy although several methods have been studied. For example, as a simple cooling method, it is conceivable to cool the shape memory alloy by immersing it in a coolant such as cooling water, but depending on the environment in which the shape memory alloy member is used, it may be immersed in the coolant. It can be difficult. Further, when the transformation point of the shape memory alloy is close to 0 ° C.
  • the cooling device disclosed in the present specification cools the shape memory alloy member.
  • the cooling device includes a cooling unit that cools a shape memory alloy member or a portion that is in contact with the shape memory alloy member, and one end connected to a coolant supply source while the other end is connected to a cooling unit, A refrigerant supply pipe that supplies the refrigerant supplied from the source to the cooling unit; and a refrigerant discharge pipe that has one end connected to the cooling unit and discharges the refrigerant discharged from the cooling unit from the other end.
  • the refrigerant supplied from the refrigerant supply source is supplied to the cooling unit through the refrigerant supply pipe, and is discharged from the cooling unit through the refrigerant discharge pipe.
  • coolant does not leak outside the cooling device until it is discharged
  • coolant is supplied to a cooling part.
  • the shape memory alloy member is cooled by a cooling part cooled by a refrigerant. For this reason, the shape memory alloy member can be easily cooled using the refrigerant without immersing the shape memory alloy member in the refrigerant.
  • the figure which shows schematic structure of the cooling device which concerns on an Example Sectional drawing of the principal part II of FIG. Sectional drawing of the front-end
  • the cooling device disclosed in the present specification may further include a first refrigerant storage space connected to the other end of the refrigerant discharge pipe.
  • the first refrigerant storage space may store the refrigerant discharged from the refrigerant discharge pipe. According to such a structure, since the refrigerant
  • the cooling unit includes a cooling surface that cools a shape memory alloy member or a portion that is in contact with the shape memory alloy member, and a refrigerant that cools the cooling surface.
  • a second refrigerant containing space for containing The refrigerant supplied from the refrigerant supply source may be supplied to the second refrigerant accommodation space via the refrigerant supply pipe, and the refrigerant supplied to the second refrigerant accommodation space may be discharged via the refrigerant discharge pipe.
  • the cooling unit includes the second refrigerant accommodation space that accommodates the refrigerant supplied from the refrigerant supply source. For this reason, a cooling surface can be cooled suitably and a member made from a shape memory alloy can be cooled suitably via a cooling surface.
  • the second refrigerant accommodation space may be covered with a heat insulating material except for the cooling surface side. According to such a configuration, it is possible to prevent heat from being transmitted from outside the cooling surface to the refrigerant in the second refrigerant accommodation space. For this reason, while being able to cool a cooling surface efficiently, it can avoid unnecessarily cooling parts other than a cooling surface.
  • the cooling surface may be formed of copper, copper alloy, aluminum, aluminum alloy, or a metal having higher thermal conductivity than aluminum. According to such a configuration, the thermal conductivity from the cooling surface can be increased, and the shape memory alloy member can be suitably cooled.
  • the cooling device disclosed in the present specification may further include a guide pipe that accommodates the refrigerant supply pipe and the refrigerant discharge pipe and guides the refrigerant supply pipe and the refrigerant discharge pipe to the cooling unit.
  • the cooling unit may include a tubular member that is connected to one end of the guide tube and has a cooling surface formed on the surface thereof and a second accommodating space formed therein. According to such a configuration, since the cooling device is formed of an elongated tubular member, the cooling device can be suitably inserted into a narrow space.
  • the cooling device 10 cools the suture needle 70 used for endoscopic surgery.
  • the suturing needle 70 is formed using a shape memory alloy, and the cooling device 10 is used to cool the suturing needle 70 (an example of a medical instrument) in the body of a patient. That is, in recent surgical operations, many endoscopic operations are performed in order to reduce the burden on the patient. In endoscopic surgery, a small hole is made in the patient's body without making a large incision in the patient's body, and an endoscope or other surgical instrument is inserted into the patient's body through the formed small hole. Done.
  • a shape memory alloy can be deformed relatively freely at a predetermined temperature (ie, transformation point) or lower to obtain a desired shape by applying a shape memory heat treatment, and at a predetermined temperature (transformation point).
  • a predetermined temperature ie, transformation point
  • transformation point ie, transformation point
  • transformation point a predetermined temperature
  • transformation point a predetermined temperature
  • transformation point a predetermined temperature
  • transformation point a predetermined temperature
  • the transformation point of the shape memory alloy it is possible to have a shape memory characteristic that restores the original stored shape.
  • the temperature inside the patient's body is higher than the temperature outside the body. Therefore, by setting the transformation point of the shape memory alloy to be equal to or higher than the transformation point (for example, 35 ° C.) inside the body and equal to or lower than the transformation point (for example, 35 ° C.) outside the body, the suture needle is inserted when inserted into the body. 70 can be restored to its original shape.
  • the suture needle 70 can be deformed outside the body to have a desired shape.
  • the suturing needle 70 can be cooled outside the patient's body using a cooling device to lower the temperature, and the suturing needle 70 after cooling can be transformed into a martensitic transformation.
  • the suture needle 70 can be deformed outside the patient's body so that the suture needle 70 can be easily inserted into the body.
  • the suture needle 70 can be deformed into an annular shape or a straight shape so as to be easily inserted into the patient's body.
  • the relatively large suture needle 70 can be safely and quickly inserted into the patient's body.
  • the suture needle 70 using the shape memory characteristic since the inside of the patient's body is at a predetermined temperature or higher, the temperature rises when the patient's body is inserted into the patient's body, so that the suture needle 70 undergoes reverse transformation and is restored to the original temperature. Restore the shape. Thereby, surgery can be performed in the patient's body.
  • the suture needle 70 using the shape memory characteristic it can be deformed outside the patient's body at the time of surgery, and is restored to the original shape inside the patient's body. Can be safely and quickly inserted into the patient's body for surgery.
  • the suture needle 70 using the shape memory characteristic when taken out from the patient's body after the operation, it is necessary to deform it again into a shape that can be easily taken out from the patient's body. That is, the suturing needle 70 must be cooled in the patient's body to lower the temperature, and the suturing needle 70 after cooling must undergo martensitic transformation.
  • a coolant such as cooling gas or water cannot be directly injected into the patient's body, it is difficult to cool the suture needle 70 by directly contacting the coolant.
  • the suture needle 70 must be inserted through a hole formed in the patient's body. Size is limited to holes formed in the patient's body. As a result, it is difficult to provide sufficient cooling capacity. Further, when the Peltier element is used, the opposite surface of the Peltier element generates heat during cooling, and thus the heated surface may be unnecessarily in contact with the tissue in the patient's body. Thus, it is difficult to cool the suture needle 70 in the patient's body.
  • the cooling device 10 of this embodiment is used for deforming the suture needle 70 into a shape that is easy to remove from the patient's body when the suture needle 70 is removed from the patient's body after endoscopic surgery.
  • the cooling device 10 includes a first tubular member 12, a refrigerant supply source 34, a refrigerant container 36, a supply pipe 30 and a discharge pipe disposed in the first tubular member 12. 32.
  • the inside of the first tubular member 12 is hollow, and the internal space communicates from the proximal end to the distal end.
  • a grasping forceps 60 can be inserted into the first tubular member 12.
  • the refrigerant supply source 34 is connected to the supply pipe 30 disposed in the first tubular member 12 through the tube 31.
  • the refrigerant container 36 is connected to the discharge pipe 32 disposed in the first tubular member 12 via the tube 33.
  • the first tubular member 12 has a cylindrical shape, extends along the axial direction of the grasping forceps 60, and is disposed on the outer periphery of the grasping forceps 60.
  • the 1st tubular member 12 has the cooling part 20 arrange
  • the first tubular member 12 includes a tube 14 disposed on the outer periphery thereof and a second tubular member 22 attached to the distal portion 15 of the tube 14.
  • the tube 14 is formed of a heat insulating material having a low thermal conductivity, and has a distal portion 15 and a proximal portion 16.
  • the radial thickness of the distal portion 15 is made smaller than the radial thickness of the proximal portion 16.
  • plate thickness indicates a dimension in the radial direction.
  • the distal portion 15 is disposed in the cooling portion 20.
  • the proximal portion 16 is disposed on the guide portion 40.
  • a supply pipe 30 and a discharge pipe 32 are disposed inside the first tubular member 12.
  • a grasping forceps 60 passes through the inside of the first tubular member 12.
  • the cooling unit 20 is disposed on the distal side of the first tubular member 12.
  • the cooling unit 20 includes a distal portion 15 of the tube 14, a part of the proximal portion 16 of the tube 14, and a second tubular member 22.
  • the cooling unit 20 is provided with a space 26 surrounded by the second tubular member 22 and the tube 14.
  • a grasping forceps 60 passes through the inner peripheral surface of the cooling unit 20.
  • the outer periphery of the cooling part 20 is formed by a part of the distal part 15 and the proximal part 16 of the tube 14.
  • the tube 14 disposed in the cooling unit 20 has a thin plate thickness on the distal side, and a thick plate thickness only on a portion on the proximal side. Since the tube 14 is formed using a heat insulating material, it is possible to prevent heat from being transmitted from the outside to the space 26 in the cooling unit 20. In addition, since the tube 14 is formed using a heat insulating material, for example, when the cooling device 10 is used for human surgery such as endoscopic surgery, when the tube 14 directly touches the body, frostbite, etc. It is possible to prevent cold damage.
  • the second tubular member 22 has a cylindrical shape and is disposed on the inner peripheral side of the tube 14.
  • the 2nd tubular member 22 is formed with the metal with high heat conductivity, for example, copper, copper alloy, aluminum, aluminum alloy, or the metal whose heat conductivity is higher than aluminum is used.
  • the second tubular member 22 has a distal portion 23, a proximal portion 25, and an intermediate portion 24.
  • the inner diameters of the distal portion 23, the proximal portion 25, and the intermediate portion 24 are the same.
  • a grasping forceps 60 passes through the inner peripheral surface of the second tubular member 22.
  • the outer peripheral surface of the second tubular member 22 is in contact with the space 26. Since the second tubular member 22 is in contact with the space 26, when the coolant is supplied into the space 26, the second tubular member 22 is cooled.
  • the distal portion 23 of the second tubular member 22 has a ring shape, and is joined to the distal portion 15 of the tube 14 at the outer peripheral end thereof.
  • the distal portion 23 of the second tubular member 22 and the distal portion 15 of the tube 14 are joined or formed as an integral tube material by welding, for example, and the space between them is sealed.
  • the inner peripheral end of the distal portion 23 is joined to the intermediate portion 24.
  • the distal portion 23 and the intermediate portion 24 are joined or formed as an integral tube material by welding, for example, and are sealed between the two.
  • the plate thickness of the distal portion 23 is thicker than the plate thickness of the intermediate portion 24 and the plate thickness of the distal portion 15 of the tube 14.
  • the outer diameter of the distal portion 23 matches the outer diameter of the distal portion 15 of the tube 14, and the inner diameter of the distal portion 23 matches the inner diameter of the intermediate portion 24.
  • the intermediate portion 24 of the second tubular member 22 has a cylindrical shape and is disposed between the distal portion 23 and the proximal portion 25.
  • the intermediate portion 24 and the distal portion 23 are joined or formed as an integral tube material by welding, for example, and are sealed between the two.
  • the intermediate portion 24 and the proximal portion 25 are joined or formed as an integral tube material by welding, for example, and are sealed between the two.
  • the thickness of the intermediate portion 24 is made thinner than the thickness of the distal portion 23 and the thickness of the proximal portion 25. For this reason, the outer diameter of the intermediate part 24 is smaller than the outer diameter of the distal part 23 and the outer diameter of the proximal part 25.
  • the inner diameter of the intermediate portion 24 matches the inner diameter of the distal portion 23 and the inner diameter of the proximal portion 25.
  • the axis of the intermediate portion 24 and the axis of the distal portion 15 coincide with each other, and the second tubular member 22 and the tube 14 are disposed on the same axis.
  • the intermediate portion 24 is disposed inside the distal portion 15.
  • a space 26 is provided between the intermediate portion 24 and the distal portion 15.
  • the proximal portion 25 of the second tubular member 22 has a ring shape, and an intermediate portion 24 is joined to the inner peripheral end thereof.
  • the proximal portion 25 abuts on the distal end surface of the proximal portion 16 of the tube 14 and the inner peripheral surface of the distal portion 15 and is sealed by joining them together by welding or the like.
  • the plate thickness of the proximal portion 25 is larger than the plate thickness of the intermediate portion 24.
  • the distal end surface of the proximal portion 25 is in contact with the space 26.
  • a supply pipe 30 and a discharge pipe 32 pass through the proximal portion 25 along the axial direction.
  • the space 26 is formed between the tube 14 and the second tubular member 22. Specifically, a space 26 is formed by being surrounded by the distal portion 23, the intermediate portion 24, the proximal portion 25 of the second tubular member 22, and the distal portion 15 of the tube 14.
  • the space 26 communicates with the supply pipe 30 and the discharge pipe 32 on the proximal side.
  • the space 26 communicates only with the supply pipe 30 and the discharge pipe 32. For this reason, the refrigerant supplied from the supply pipe 30 is accommodated in the space 26 and discharged from the discharge pipe 32.
  • the guide portion 40 is disposed on the proximal side of the first tubular member 12 and is formed by the proximal portion 16 of the tube 14.
  • the thickness of the proximal portion 16 of the tube 14 is thicker than the thickness of the distal portion 15 on the distal side.
  • the guide unit 40 accommodates the supply pipe 30 and the discharge pipe 32. A grasping forceps 60 passes through the inside of the guide portion 40.
  • the supply pipe 30 is made of metal, and is disposed along the axial direction inside the guide portion 40.
  • the distal end of the supply tube 30 passes through the proximal portion 16 of the second tubular member 22 and communicates with the space 26.
  • the supply pipe 30 and the proximal portion 25 of the second tubular member 22 are joined.
  • the proximal end of the supply pipe 30 is connected to the tube 31 outside the first tubular member 12 and communicates with the refrigerant supply source 34 via the tube 31.
  • the supply pipe 30 is a path for supplying the solvent supplied through the tube 31 to the space 26.
  • the discharge pipe 32 is made of metal, and is disposed along the axial direction inside the guide portion 40.
  • the distal end of the drain tube 32 passes through the proximal portion 16 of the second tubular member 22 and communicates with the space 26.
  • the discharge pipe 32 and the proximal portion 25 of the second tubular member 22 are joined.
  • the proximal end of the discharge pipe 32 is connected to the tube 33 outside the first tubular member 12 and communicates with the refrigerant container 36 through the tube 33.
  • the discharge pipe 32 is a path for discharging the refrigerant from the space 26.
  • the refrigerant supply source 34 contains a refrigerant used in the cooling device 10.
  • a cold spray can be used as the coolant supply source 34.
  • the cold spray stores a compressed refrigerant gas therein, and the refrigerant gas is injected by pressing a button. Since the jetted refrigerant is compressed in the spray, it is vaporized when jetted from the spray.
  • the refrigerant supply source 34 is connected to the tube 31 and communicates with the space 26 via the tube 31 and the supply pipe 30.
  • the inner diameter of the tube 31 and the inner diameter of the supply pipe 30 are substantially the same as the inner diameter of the nozzle of the cold spray, and are relatively small.
  • the cold spray coolant is not particularly limited.
  • various gases such as LP gas and CO 2 gas can be liquefied and used, but CO 2 gas is preferably used for human surgery such as endoscopic surgery. The reason is that in endoscopic surgery, surgery is performed with CO 2 gas in the body. Therefore, since it is safe even if the cooling gas leaks in the body, it is preferable to use a cold spray using CO 2 .
  • the refrigerant container 36 is connected to the tube 33 and communicates with the space 26 via the tube 33 and the discharge pipe 32. Since the space 26 communicates with the supply pipe 30 and the discharge pipe 32, when the refrigerant is supplied from the refrigerant supply source 34 to the space 26, the refrigerant in the space 26 passes through the discharge pipe 32 and the tube 33 and the refrigerant container. It is discharged up to 36. That is, the refrigerant is supplied from the refrigerant supply source 34, passes through the tube 31, the supply pipe 30, the space 26, the discharge pipe 32 and the tube 33, and is discharged to the refrigerant container 36.
  • the grasping forceps 60 is disposed inside the first tubular member 12. As shown in FIG. 3, the grasping forceps 60 includes a pair of grasping portions 61, a link mechanism 62 connected to the pair of grasping portions 61, and a rod 63 connected to the link mechanism 62.
  • the grasping forceps 60 includes a tube 64 that covers the rod 63 and a handle 65 (see FIG. 1) connected to the rod 63.
  • the pair of gripping portions 61 are provided at the distal end portion of the gripping forceps 60.
  • the pair of gripping portions 61 face each other and are configured to be openable and closable.
  • the pair of gripping portions 61 opens and closes with the gripping surfaces 66 facing each other. When the pair of gripping portions 61 are closed, the suture needle 70 is gripped between the pair of gripping portions 61.
  • the link mechanism 62 is provided between the pair of gripping portions 61 and the rod 63.
  • the link mechanism 62 connects the grip portion 61 and the rod 63.
  • the link mechanism 62 transmits the movement of the rod 63 to the pair of grip portions 61.
  • the link mechanism 62 converts the translational motion of the rod 63 into the rotational motion of the grip portion 61.
  • the pair of gripping portions 61 are opened and closed by rotating via the link mechanism 62.
  • the rod 63 is provided between the link mechanism 62 and the handle 65.
  • the rod 63 connects the link mechanism 62 and the handle 65.
  • the rod 63 translates in the axial direction by operating the handle 65.
  • the rod 63 is disposed inside the tube 64.
  • the tube 64 extends along the rod 63.
  • the handle 65 is provided at the proximal end of the grasping forceps 60.
  • the rod 63 translates. Thereby, a pair of holding part 61 opens and closes.
  • the grasping forceps 60 can be accommodated in the first tubular member 12 by moving the grasping forceps 60 to the proximal side with the pair of grasping portions 61 closed.
  • the gripping forceps 60 can be removed from the cooling device 10 by moving the gripping portion 61 to the proximal end of the first tubular member 12.
  • the grasping forceps 60 can be used by being attached to the cooling device 10, or can be detached from the cooling device 10 and used alone.
  • the grasping forceps 60 is inserted into the first tubular member 12 with the pair of grasping portions 61 being closed.
  • the position of the grasping forceps 60 is adjusted with respect to the first tubular member 12 so that the grasping portion 61 is positioned in the cooling portion 20 of the first tubular member 12.
  • the refrigerant is then supplied from the refrigerant supply source 34 to the space 26.
  • the refrigerant supplied from the refrigerant supply source 34 is supplied to the space 26 through the tube 31 and the supply pipe 30.
  • the refrigerant supplied to the space 26 is vaporized in the space 26, and the vaporized refrigerant is accommodated in the space 26.
  • the space 26 communicates with the supply pipe 30 and the discharge pipe 32. Therefore, when the refrigerant is supplied from the supply pipe 30 to the space 26, the refrigerant stored in the space 26 is discharged into the refrigerant container 36 through the discharge pipe 32 and the tube 33.
  • the refrigerant passage in the cooling device 10 is sealed, and the refrigerant does not leak to the outside of the cooling device 10.
  • the cooling unit 20 When the refrigerant is supplied into the space 26, the cooling unit 20 is cooled. Specifically, the tube 14 and the second tubular member 22 that are in contact with the space 26 are cooled.
  • the tube 14 is formed of a heat insulating material
  • the second tubular member 22 is formed of a metal having high thermal conductivity. For this reason, the 2nd tubular member 22 is cooled more and the temperature falls.
  • the gripping portion 61 of the gripping forceps 60 is cooled via the second tubular member 22.
  • the gripping forceps 60 are operated to cause the gripping portion 61 to protrude from the distal end of the first tubular member 12.
  • the suture needle 70 grasped by the grasping forceps 60 can be cooled by grasping the suture needle 70 with the grasping portion 61.
  • the suture needle 70 may be cooled by further operating the grasping forceps 60 and bringing the suture needle 70 into direct contact with the second tubular member 22.
  • the cooling device 10 can cool the suturing needle 70 without bringing the coolant into direct contact with the suturing needle 70.
  • the suture needle 70 which is an example of a shape memory alloy member that is cooled using the cooling device 10, will be described.
  • the suture needle 70 is used to suture an organ or tissue in the body of a patient and is used in endoscopic surgery.
  • a suture thread is connected to the suture needle 70.
  • the suture needle 70 is formed using a shape memory alloy. Examples of shape memory alloys include Ni-Ti alloys, Cu-Zn-Al alloys, and Ni-Ti-Cu alloys.
  • the shape memory alloy has a shape memory effect or superelasticity, and changes its shape by phase transformation or reverse transformation between the austenite phase and the martensite phase.
  • the suture needle 70 made of a shape memory alloy stores an arc shape.
  • the suture needle 70 Due to the characteristics of the shape memory alloy, the suture needle 70 starts to decrease when the temperature is lower than a predetermined temperature (below the martensite transformation point temperature Ms point), and can be deformed when the temperature is lower than the Mf point (martensite transformation end temperature).
  • a predetermined temperature below the martensite transformation point temperature Ms point
  • Mf point martensite transformation end temperature
  • the temperature rises above the predetermined temperature above the austenite transformation temperature As point
  • the rate goes up and it returns to its original shape and becomes superelastic.
  • the value of each transformation point predetermined temperature
  • the value of each transformation point can be adjusted by adjusting the ratio of Ni and Ti and the memory heat treatment temperature.
  • the predetermined temperature can be set in consideration of the body temperature of the human body.
  • the predetermined temperature can be set within a range of 30 ° C. to 40 ° C., and the predetermined temperature in this embodiment is set to 35 ° C. (that is, body temperature).
  • the temperature inside the patient's body is higher than the temperature outside the body, becomes a predetermined temperature (for example, 35 ° C.) or higher in the body, and becomes lower than the predetermined temperature outside the body.
  • the suture needle 70 becomes a predetermined temperature or lower and becomes deformable.
  • the suturing needle 70 when the suturing needle 70 is inside the patient's body, the temperature becomes equal to or higher than a predetermined temperature, and the original memorized arc shape is restored.
  • the suturing needle 70 is cooled to a predetermined temperature or lower by cooling the suturing needle 70.
  • the suturing needle 70 becomes a predetermined temperature or less and can be deformed.
  • the predetermined temperature is 35 ° C.
  • the suture needle 70 is easily deformed or can be freely deformed when the Young's modulus is lowered outside the patient's body under an environment of 35 ° C. or less.
  • the suture needle 70 when the suture needle 70 is introduced into the body of a patient having a body temperature of 35 ° C. or higher, the suture needle 70 is reversely transformed to restore the stored arc shape.
  • the patient's body can be sutured when the suture needle has an arc shape.
  • the suturing needle 70 can be cooled to be below the transformation point Mf, and can be freely deformed. By deforming the suture needle 70, the suture needle 70 can be easily taken out from the patient's body.
  • Laparoscopic surgery is a well-known surgical method. When a patient's abdomen is operated, a small hole is opened in the patient's abdomen without opening the patient's abdomen. This is a surgery performed by inserting other surgical instruments into the abdominal cavity of the patient.
  • the trocar 50 When performing laparoscopic surgery, the trocar 50 is inserted into the abdomen of the patient M as shown in FIG.
  • the trocar 50 is inserted into a hole opened in the abdomen of the patient M.
  • the trocar 50 is a known surgical instrument.
  • the trocar 50 When a laparoscope or other surgical instrument is inserted into the abdominal cavity of the patient M, the trocar 50 is connected to the outside of the patient's abdomen via a hole formed in the abdomen of the patient M. It is a device that connects the inside (outside and inside of the body).
  • the trocar 50 includes an inlet 51, a guide tube 52, and an outlet 53.
  • the inlet 51 is open outside the patient's abdomen P (outside the body), and the outlet 53 is inside the patient's abdomen P (inside the body). It is open.
  • An inlet 51 and an outlet 53 of the trocar 50 communicate with the inside of the guide tube 52.
  • the guide tube 52 extends from the outside to the inside (from the outside of the body to the inside) of the patient's abdomen P.
  • the arcuate shape of the suture needle 70 is changed outside the patient's abdomen P (outside the body). Since the outside of the patient's abdomen P (outside the body) is below a predetermined temperature, the suture needle 70 can be deformed. In the example shown in FIG. 5, the arcuate suture needle 70 is deformed into an annular shape. When the suture needle 70 is deformed outside the patient's body, the suture needle 70 is preferably bent so that the distal end portion of the suture needle 70 is wound inside. Thus, the distal end portion of the suture needle 70 is not caught inside the guide tube 52 or the patient's body.
  • the suture needle 70 is grasped by the grasping forceps 60a, and the suture needle 70 is inserted into the guide tube 52 from the entrance 51 of the trocar 50.
  • the gripping forceps 60a is not attached to the cooling device 10, but is used alone.
  • the grasping forceps 60 a and the suture needle 70 are pushed into the guide tube 52, the grasping forceps 60 a and the suture needle 70 are guided to the outlet 53 along the guide tube 52.
  • the grasping forceps 60 a and the suture needle 70 are sent out from the outlet 53 into the abdominal cavity (inside the body) of the patient.
  • the suture needle 70 When the suture needle 70 is delivered to the inside (inside the body) of the patient's abdomen P, the suture needle 70 returns to its original arcuate shape, as shown in FIG. That is, since the temperature is equal to or higher than a predetermined temperature inside the patient's abdomen P (inside the body), the arcuate shape stored in the suture needle 70 is restored. After the suture needle 70 is restored to the original arcuate shape, the patient's body is sutured by the suture needle 70. For example, a patient's internal organs such as the stomach and intestine are sutured.
  • the suturing needle 70 is cooled using the cooling device 10.
  • the cooling device 10 is inserted inside the patient's abdomen P (inside the body). At this time, the cooling device 10 is inserted from a hole provided at a position different from the hole into which the grasping forceps 60a is inserted. By inserting the cooling device 10 through a hole different from the hole into which the grasping forceps 60a is inserted, the cooling device 10 can be inserted while maintaining the state in which the suture needle 70 is grasped by the grasping forceps 60a.
  • the grasping portion 61 of the grasping forceps 60 attached to the cooling device 10 is cooled, and then the suture needle 70 grasped by the grasping forceps 60a is replaced with the grasping forceps 60 attached to the cooling device 10. It is gripped by the gripping part 61.
  • the suturing needle 70 when the suturing needle 70 is grasped by the grasping portion 61 of the grasping forceps 60 attached to the cooling device 10, the suturing needle 70 has an arc shape. Since the gripping part 61 is cooled by the cooling device 10, the suture needle 70 gripped by the gripping part 61 is also cooled to lower the temperature, and can be deformed near the part gripped by the gripping part 61. . For this reason, the grasping forceps 60 and the cooling device 10 are taken out of the body from the trocar 50 as a unit. At this time, since the suture needle 70 remains in an arc shape, it contacts the inside of the guide tube 52 of the trocar 50. However, the suture needle 70 can be deformed at a portion gripped by the grip portion 61 and is deformed at this portion. For this reason, the suture needle 70 can be taken out of the patient through the guide tube 52 of the trocar 50.
  • the suture needle 70 formed of a shape memory alloy since the suture needle 70 formed of a shape memory alloy is outside the patient's body before use, it can be easily cooled and deformed. In addition, by setting the transformation point to 35 ° C., the original shape can be easily restored in the patient's body.
  • the cooling device 10 of the present embodiment the suture needle 70 can be easily cooled even if the suture needle 70 is inside the patient's body. In particular, the cooling device 10 can efficiently cool the cooling unit 20 without bringing the refrigerant into direct contact with the body of the patient. For this reason, the cooling device 10 can cool the suture needle 70 safely and quickly in the patient's body.
  • the supply pipe 30 and the tube 31 are examples of a “refrigerant supply pipe”, the discharge pipe 32 and the tube 33 are examples of a “refrigerant discharge pipe”, and the refrigerant container 36 is an example of a “first refrigerant storage space”.
  • the inner peripheral surface of the second tubular member 22 is an example of a “cooling surface”, the space 26 is an example of a “second refrigerant storage space”, and the proximal portion 16 of the tube 14 is an example of a “guide tube”. is there.
  • the shape memory product member to be cooled is not limited to the suture needle 70.
  • the cooling device 10 can be used to cool other medical instruments formed using shape memory alloys and used for endoscopic surgery.
  • the shape memory alloy member may be brought into direct contact with the distal end of the cooling device.
  • cold spray is used as the refrigerant supply source 34, but a refrigerant other than cold spray may be used as the refrigerant supply source 34. That is, it may be a substance having a cooling effect, and may be a liquid such as cold water, for example.
  • the refrigerant discharged from the space 26 is accommodated in the refrigerant container 36, but is not limited to such a configuration. For example, when a highly safe substance is used as the refrigerant, the refrigerant may be directly discharged to the outside of the cooling device 10 without collecting the refrigerant.
  • the cooling device 10 of the present embodiment is used for cooling a medical instrument formed using a shape memory alloy, but is not limited to such a configuration.
  • it can be used for cooling a shape memory alloy member (for example, an actuator or the like) disposed in a mechanical device.
  • a shape memory alloy member for example, an actuator or the like
  • the cooling device disclosed in the present specification it is possible to cool the shape memory alloy member without scattering the refrigerant in the mechanical device.
  • coolant discharge pipe are used as a cooling device disclosed by this specification, the inside of a mechanical apparatus can be wired comparatively freely.
  • the shape memory alloy disposed inside the mechanical device can be suitably cooled by providing the cooling portion at a position in contact with or close to the shape memory alloy member.
  • the cooling device 10 a may include a handle 80 for controlling the refrigerant supplied from the refrigerant supply source 34.
  • the cooling device 10a shown in FIG. 8 is different from the cooling device 10 in that a handle 80 is provided, and the other configurations are substantially the same. Therefore, the description of the same configuration as the cooling device 10 is omitted.
  • the handle 80 includes a support portion 82 and a holder portion 84.
  • the support portion 82 is fixed to the first tubular member 12.
  • the holder portion 84 holds the refrigerant supply source 34 and is slidably disposed with respect to the support portion 82.
  • the refrigerant is not supplied from the refrigerant supply source 34.
  • the holder portion 84 is slid to approach the support portion 82, the refrigerant is supplied from the refrigerant supply source 34.
  • the distance between the support portion 82 and the holder portion 84 it is possible to switch between a state in which the refrigerant is supplied from the refrigerant supply source 34 and a state in which no refrigerant is supplied. That is, by using the handle 80, the switching of the refrigerant supply from the refrigerant supply source 34 and the timing for supplying the refrigerant from the refrigerant supply source 34 can be easily adjusted.
  • Cooling device 1st tubular member 14 Tube 15 Distal part 16 Proximal part 20 Cooling part 22 2nd tubular member 23 Distal part 24 Middle part 25 Proximal part 26 Space 30 Supply pipe 31 Tube 32 Exhaust pipe 33 Tube 34 Refrigerant supply source 36 Refrigerant container 40 Guide portion 60 Grip forceps 70 Suture needle 80 Handle 82 Support portion 84 Holder portion

Abstract

LA présente invention concerne un dispositif de refroidissement (10) qui est pourvu d'une unité de refroidissement (20), d'un tuyau d'alimentation en fluide frigorigène (30, 31) et d'un tuyau d'évacuation de fluide frigorigène (32, 33). Le fluide frigorigène passe d'une source d'alimentation en fluide frigorigène (34) à travers le tuyau d'alimentation en fluide frigorigène (30, 31) vers l'unité de refroidissement (20), et passe en outre à travers le tuyau d'évacuation de fluide frigorigène (32, 33) et est évacué vers un récipient de fluide frigorigène (36). Un exemple de procédé d'utilisation est le suivant. Une aiguille à suture arquée (70) constituée d'un alliage à mémoire de forme est déformée pour obtenir une forme annulaire hors du corps d'un patient. L'aiguille à suture déformée (70) est introduite dans la cavité abdominale du patient par l'intermédiaire d'un trocart (50). L'aiguille à suture (70) reprend sa forme arquée grâce aux caractéristiques de l'alliage à mémoire de forme. Le tissu à l'intérieur de la cavité abdominale est suturé à l'aide de l'aiguille à suture arquée (70). Une pince de préhension (60) équipée du dispositif de refroidissement (10) est ensuite insérée dans la cavité abdominale et l'aiguille à suture (70) est saisie à l'aide de parties de préhension (61) de la pince de préhension (60). Les parties de préhension (61) et l'aiguille à suture (70) sont refroidies au moyen de l'unité de refroidissement (20). L'aiguille à suture (70) refroidie est extraite vers l'extérieur du corps à travers le trocart (50) tout en étant déformée.
PCT/JP2017/008765 2016-03-23 2017-03-06 Dispositif de refroidissement WO2017163837A1 (fr)

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US16/087,143 US20190099169A1 (en) 2016-03-23 2017-03-06 Cooling device
EP17769882.6A EP3434198A4 (fr) 2016-03-23 2017-03-06 Dispositif de refroidissement

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JP2016059170A JP2017169807A (ja) 2016-03-23 2016-03-23 冷却装置
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US11219449B2 (en) * 2019-02-22 2022-01-11 Ethicon, Inc. Suture needle packages for loading suture needles and methods of passing suture needles through trocars
JP2020156907A (ja) * 2019-03-27 2020-10-01 池田　哲夫 手術用鉗子
CN110236634B (zh) * 2019-07-30 2022-08-02 上海理工大学 记忆合金式可分离止血钳装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106190A (en) * 1981-07-31 1983-04-07 Leuven Res & Dev Vzw Thermally responsive actuators utilising shape memory, and exercising devices utilising the same
JPS61100392A (ja) * 1984-10-19 1986-05-19 株式会社日立製作所 駆動装置
JPS62211039A (ja) * 1986-03-13 1987-09-17 オリンパス光学工業株式会社 内視鏡
JPH06339887A (ja) * 1993-05-31 1994-12-13 Tokin Corp アクチュエータ、並びにそれを用いた多関節手、温度スイッチ、過電流スイッチ、回路切替スイッチ
GB2280957A (en) * 1993-08-12 1995-02-15 Univ Hull Surface device configurable by shape memory actuation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6158979A (ja) * 1984-08-29 1986-03-26 Furukawa Electric Co Ltd:The 形状記憶合金アクチユエ−タ
US5186420A (en) * 1991-11-08 1993-02-16 The United States Of America As Represented By The Secretary Of The Navy Articulated fin/wing control system
US20120022666A1 (en) * 2009-01-07 2012-01-26 Brooks Adam W Actuator for Prosthetic Finger and Method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106190A (en) * 1981-07-31 1983-04-07 Leuven Res & Dev Vzw Thermally responsive actuators utilising shape memory, and exercising devices utilising the same
JPS61100392A (ja) * 1984-10-19 1986-05-19 株式会社日立製作所 駆動装置
JPS62211039A (ja) * 1986-03-13 1987-09-17 オリンパス光学工業株式会社 内視鏡
JPH06339887A (ja) * 1993-05-31 1994-12-13 Tokin Corp アクチュエータ、並びにそれを用いた多関節手、温度スイッチ、過電流スイッチ、回路切替スイッチ
GB2280957A (en) * 1993-08-12 1995-02-15 Univ Hull Surface device configurable by shape memory actuation

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JP2017169807A (ja) 2017-09-28
US20190099169A1 (en) 2019-04-04
EP3434198A1 (fr) 2019-01-30

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